CN105155571B - Replaceable prestressed anchor bolt assembly and mounting and replacement construction method thereof - Google Patents
Replaceable prestressed anchor bolt assembly and mounting and replacement construction method thereof Download PDFInfo
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- CN105155571B CN105155571B CN201510515415.7A CN201510515415A CN105155571B CN 105155571 B CN105155571 B CN 105155571B CN 201510515415 A CN201510515415 A CN 201510515415A CN 105155571 B CN105155571 B CN 105155571B
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- bolt
- crab
- anchor slab
- nut
- leveling
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- 238000010276 construction Methods 0.000 title claims description 11
- 239000004033 plastic Substances 0.000 claims abstract description 31
- 229920003023 plastic Polymers 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000010079 rubber tapping Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 229910052755 nonmetal Inorganic materials 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000002929 anti-fatigue Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Joining Of Building Structures In Genera (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a replaceable prestressed anchor bolt device. The replaceable prestressed anchor bolt device comprises an upper anchor plate (1), a lower anchor plate (2), anchor bolts (3) connected with the upper anchor plate (1) and the lower anchor plate (2) and plastic casing pipes (7) arranged on the peripheries of the anchor bolts (3) in a sleeving manner. The upper ends and the lower ends of the plastic casing pipes (7) are shrunk and sealed by thermal shrinkable sleeves (8). Nonmetal leveling nuts (6) are arranged on the thermal shrinkable sleeves (8) at the upper ends of the plastic casing pipes (7), and upper nuts (9) are arranged at the tops of the anchor bolts (3). The bottoms of the anchor bolts (3) and bottom sealing assemblies (4) are fixed. The replaceable prestressed anchor bolt device is reasonable in structural design, each anchor bolt can be freely replaced after a concrete foundation is completed or a fan runs, and a large amount of manpower and a large number of material resources can be saved; replacement cost is low, and efficiency is high; and many defects in the prior art can be overcome.
Description
Technical field
The present invention relates to a kind of attachment means, particularly to a kind of removable prestressed anchor pin device, can be used for coagulation
Earth foundation prestressed bolt.
Background technology
In recent years, apply to wind power generation stepped basis prestressed bolt molectron more.Compare traditional embedded type tower,
Prestressed bolt anti-fatigue performance is good, and the uniform base concrete of stress is pressurized all the time, good endurance.But existing prestressed bolt
Defect be, crab-bolt Yi Dan fracture just cannot change, need to knock wind power generation stepped basic mixed mud open, reinstall new
Crab-bolt, engineering is big, and engineering is long, high cost, changes trouble, wastes time and energy, and becomes the bottleneck of prestressed bolt use.
Existing basic (cn201420368814) for wind power generation stepped crab-bolt changeable type, using in concrete basis
Heart reserving hole is conveniently holed and is reached the lower end of lower anchor slab, by the artificial method changing crab-bolt.The shortcoming of this kind of method is
Cost of holing is big and causes difficult and hidden danger for security of constructing.
Content of the invention
Goal of the invention: it is an object of the invention to overcoming the deficiencies in the prior art, providing a kind of reasonable in design, changing
Convenient, can use manpower and material resources sparingly, the removable prestressed bolt molectron of low cost.
Technical scheme: in order to realize object above, the technical scheme that the present invention takes is:
A kind of device of replaceable crab-bolt, it includes anchor slab, lower anchor slab, the crab-bolt of anchor slab and lower anchor slab in connection, on
Crab-bolt periphery between anchor slab and lower anchor slab is cased with plastic bushing, and the upper/lower terminal of plastic bushing, by thermal shrinkable sleeve collapsed seal, is moulded
On the thermal shrinkable sleeve of material sleeve upper end, nonmetallic leveling nut is installed, described crab-bolt top is provided with top nut；Described anchor
The bottom of bolt is fixed with sealed bottom assembly.
Preferably, above-described removable prestressed bolt molectron, outside described sealed bottom assembly
Portion is the polygons such as circle or hexagon, and inside is the helicitic texture being adapted to crab-bolt bottom.
As other preferred versions, above-described removable prestressed bolt molectron, described sealed bottom group
Part includes nut box and the hex nut being located in nut box, and nut box is welded on lower anchor slab, hex nut and crab-bolt bottom
Threaded adapter.Described nut box can be alternatively, for hexagon, the shape that other can stop nut rotation；The top of nut box is adopted
Use stamping forming medicated cap, the space that crab-bolt adjusts height can be accommodated.
Preferably, above-described removable prestressed bolt molectron, described sealed bottom assembly by
Metal or plastics are made；Sealed bottom assembly has the effect of sealing crab-bolt bottom, can stop that base concrete touches crab-bolt
Thread segment, is convenient for changing.
Crab-bolt periphery is cased with plastic bushing, can isolate crab-bolt with concrete, so that the whole pretension of crab-bolt is delivered to and cast anchor
On plate.
The upper/lower terminal of plastic bushing, by thermal shrinkable sleeve collapsed seal, can prevent concrete from entering plastic bushing impact crab-bolt
Tensioning.
Preferably, above-described removable prestressed bolt molectron, described nonmetallic leveling nut
For nylon leveling nut.
The construction installation method of the removable prestressed bolt molectron that the present invention provides, comprises the following steps:
1) first lower anchor slab is fixed on blinding layer leveling；
2) sling upper anchor slab, crab-bolt is penetrated in plastic bushing, plastic bushing is cased with nonmetallic leveling nut, then will
Crab-bolt passes through the bolt hole on upper anchor slab, then screws on top nut at crab-bolt top；
3) with the mobile upper anchor slab of crane to above lower anchor slab, slowly hang lower upper anchor slab, make the lower anchor slab of the corresponding insertion of crab-bolt
In bolt hole；
4) rotate every crab-bolt at top, crab-bolt bottom is screwed in the lower nut being welded on below lower anchor slab；
5) by anchor slab in nonmetallic leveling nut leveling；
6) colligation reinforcement foundation pour mixed mud, by upper anchor slab, lower anchor slab and crab-bolt are cast in concrete foundation, etc.
Reach after prescribed strength to concrete, after hanging on bottom tower, tensioning crab-bolt on upper anchor slab.
The replacing construction method of the removable prestressed bolt molectron that the present invention provides, comprises the following steps:
1) extract the top half of fracture crab-bolt first；
2) and then with tapping screw thread drill bit be aligned pierce the rupture cross section of fracture crab-bolt；Fracture is driven while screw thread pierces
The latter half of crab-bolt and screw thread reversely rotate, after making fracture crab-bolt automatically exit from lower nut, together with tapping screw thread drill bit and disconnected
Split bolt hole together on upper anchor slab for the crab-bolt to extract；Or using the sleeve that end is provided with claw will rupture crab-bolt take out；
3) insert new crab-bolt at the bolt hole of upper anchor slab, in rotary-top crab-bolt so as to bottom is screwed into lower nut, so
After new pad and nut being installed successively at the bottom tower above upper anchor slab afterwards, tensioning crab-bolt.
Compared to the prior art the present invention has the advantages that
The removable prestressed bolt molectron that the present invention provides, reasonable in design, after concrete foundation completion
Or after fan operation, still can freely change every crab-bolt, it is to avoid change crab-bolt to base using disruptive methods such as excavation of foundation pit
The impact of plinth stress.Substantial amounts of man power and material can be saved, replacement cost is low, efficiency high.
The construction installation method of the removable prestressed bolt molectron that the present invention provides, workable, work effect
Rate is high, easy construction.
The replacing construction method of the removable prestressed bolt molectron that the present invention provides, workable, work effect
Rate is high, can save substantial amounts of man power and material, reduces cost, improve and change efficiency, can overcome many deficiencies of prior art.
Brief description
The structural representation of a kind of removable prestressed bolt molectron that Fig. 1 provides for the present invention.
Fig. 2 is the planar structure schematic diagram along the lower anchor slab in a-a direction for the Fig. 1.
Fig. 3 is the cross section structure schematic diagram of sealed bottom assembly.
Fig. 4 is the cross section another kind structural representation of sealed bottom assembly.
Fig. 5 is the vertical section structure schematic diagram of sealed bottom assembly.
Fig. 6 is the structural representation changing prestressed bolt molectron.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, it is further elucidated with the present invention it should be understood that these embodiments are merely to illustrate
The present invention rather than restriction the scope of the present invention, after having read the present invention, those skilled in the art are each to the present invention
The modification planting the equivalent form of value all falls within the application claims limited range.
Embodiment 1
As Fig. 1, shown in Fig. 2 and Fig. 3, a kind of device of replaceable crab-bolt, it includes anchor slab 1, and lower anchor slab 2, in connection
Anchor slab 1 and the crab-bolt 3 of lower anchor slab 2, crab-bolt 3 periphery between upper anchor slab 1 and lower anchor slab 2 is cased with plastic bushing 7, plastic bushing 7
Upper/lower terminal by thermal shrinkable sleeve 8 collapsed seal, the thermal shrinkable sleeve 8 of plastic bushing 7 upper end is provided with nonmetallic leveling nut 6, institute
Crab-bolt 3 top stated is provided with top nut 9；The described bottom of crab-bolt 3 is fixing with sealed bottom assembly 4.
Described sealed bottom assembly 4 is outside to be hexagonal configuration, and inside is the helicitic texture being adapted to crab-bolt 3 bottom.
Above-described removable prestressed bolt molectron, described sealed bottom assembly 4 by copper or aluminum metal or
Polytetrafluoroethylplastic plastic is made；Sealed bottom assembly 4 has the effect of sealing crab-bolt 3 bottom, can stop that base concrete contacts
To crab-bolt 3 thread segment, it is convenient for changing.
Embodiment 2
As Fig. 1, shown in Fig. 2 and Fig. 4, a kind of device of replaceable crab-bolt, it includes anchor slab 1, and lower anchor slab 2, in connection
Anchor slab 1 and the crab-bolt 3 of lower anchor slab 2, crab-bolt 3 periphery between upper anchor slab 1 and lower anchor slab 2 is cased with plastic bushing 7, plastic bushing 7
Upper/lower terminal by thermal shrinkable sleeve 8 collapsed seal, the thermal shrinkable sleeve 8 of plastic bushing 7 upper end is provided with nonmetallic leveling nut 6, institute
Crab-bolt 3 top stated is provided with top nut 9；The described bottom of crab-bolt 3 is fixing with sealed bottom assembly 4.
Described sealed bottom assembly 4 is outside to be circle, and inside is the helicitic texture being adapted to crab-bolt 3 bottom.
Above-described removable prestressed bolt molectron, described sealed bottom assembly 4 by copper or aluminum metal or
Polytetrafluoroethylplastic plastic is made；Sealed bottom assembly 4 has the effect of sealing crab-bolt 3 bottom, can stop that base concrete contacts
To crab-bolt 3 thread segment, it is convenient for changing.
Embodiment 3
As Fig. 1, shown in Fig. 2 and Fig. 5, a kind of device of replaceable crab-bolt, it includes anchor slab 1, and lower anchor slab 2, in connection
Anchor slab 1 and the crab-bolt 3 of lower anchor slab 2, crab-bolt 3 periphery between upper anchor slab 1 and lower anchor slab 2 is cased with plastic bushing 7, plastic bushing 7
Upper/lower terminal by thermal shrinkable sleeve 8 collapsed seal, the thermal shrinkable sleeve 8 of plastic bushing 7 upper end is provided with nonmetallic leveling nut 6, institute
Crab-bolt 3 top stated is provided with top nut 9；The described bottom of crab-bolt 3 is fixing with sealed bottom assembly 4.
Described sealed bottom assembly 4 includes the nut box 4-1 and hex nut 4-2 being located in nut box 4-1, nut box
4-1 is welded on lower anchor slab 2, and hex nut 4-2 is adapted to crab-bolt 3 bottom thread.
Above-described removable prestressed bolt molectron, described sealed bottom assembly 4 by copper or aluminum metal or
Polytetrafluoroethylplastic plastic is made；Sealed bottom assembly 4 has the effect of sealing crab-bolt 3 bottom, can stop that base concrete contacts
To crab-bolt 3 thread segment, it is convenient for changing.
Embodiment 4
The construction installation method of removable prestressed bolt molectron, it comprises the following steps:
1) with common crab-bolt cage identical installation steps: first lower anchor slab 2 is fixed on blinding layer leveling；Sling upper anchor
Plate 1, crab-bolt 3 is penetrated in plastic bushing 7, and plastic bushing 7 is cased with nonmetallic leveling nut 6, then crab-bolt 3 is passed through upper anchor
Bolt hole on plate 1, then crab-bolt 3 top screw on top nut 9 crane mobile on anchor slab 1 to lower anchor slab 2 above, slowly hang
Go up down anchor slab 1, make in the bolt hole of the lower anchor slab 2 of the corresponding insertion of crab-bolt 3；
2) because lower nut 5 has been fixed, therefore it is not required to need when mounted to be supported with thin nut as common crab-bolt cage.?
Top rotates every crab-bolt 3, crab-bolt 3 bottom is screwed in the lower nut 5 being welded on lower anchor slab 2 lower section；
3) followed by with common crab-bolt cage identical step: by anchor slab 1 in the leveling of nonmetallic leveling nut 6.Colligation
Reinforcement foundation simultaneously pours mixed mud, and by upper anchor slab 1, lower anchor slab 2 and crab-bolt 3 are cast in concrete foundation, when concrete reaches
To after prescribed strength, after hanging on bottom tower, tensioning crab-bolt 3 on upper anchor slab 1.
Embodiment 5
The replacing construction method of removable prestressed bolt molectron, comprises the following steps:
1) extract the top half of fracture crab-bolt 10 first；
2) as shown in fig. 6, and then being directed at the rupture cross section piercing fracture crab-bolt 10 with tapping screw thread drill bit 11；Screw thread pierces
While drive the latter half and the screw thread of fracture crab-bolt 10 to reversely rotate, after making fracture crab-bolt 10 automatically exit from lower nut 5, even
With tapping screw thread drill bit 11 and fracture crab-bolt 10, together the bolt hole on upper anchor slab 1 is extracted.Wherein, tapping screw thread drill bit 11 is joined
Close electric discharge machine to use；
3) insert new crab-bolt 3 at the bolt hole of upper anchor slab 1, in rotary-top crab-bolt 3 so as to bottom is screwed into lower nut
5, after then new pad and nut being installed successively at the bottom tower above upper anchor slab 1, tensioning crab-bolt 3.
The above is only the preferred embodiment of the present invention it is noted that ordinary skill people for the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of removable prestressed bolt molectron, it is characterised in that it includes anchor slab (1), lower anchor slab (2), connects
Upper anchor slab (1) and the crab-bolt (3) of lower anchor slab (2), crab-bolt (3) periphery between upper anchor slab (1) and lower anchor slab (2) is cased with plastic sheath
Pipe (7), the upper/lower terminal of plastic bushing (7) by thermal shrinkable sleeve (8) collapsed seal, on the thermal shrinkable sleeve (8) of plastic bushing (7) upper end
Nonmetallic leveling nut (6) is installed, described crab-bolt (3) top is provided with top nut (9)；The bottom of described crab-bolt (3)
Fixing with sealed bottom assembly (4), described sealed bottom assembly (4) includes nut box (4-1) and is located in nut box (4-1)
Hex nut (4-2), nut box (4-1) is welded on lower anchor slab (2), and hex nut (4-2) is fitted with crab-bolt (3) bottom thread
Join；
The replacing construction method of removable prestressed bolt molectron, comprises the following steps:
1) extract the top half of fracture crab-bolt (10) first；
2) and then with tapping screw thread drill bit (11) be aligned pierce the rupture cross section of fracture crab-bolt (10)；Drive while screw thread pierces
The latter half of fracture crab-bolt (10) is reversely rotated with screw thread, after making fracture crab-bolt (10) automatically exit from lower nut (5), together with certainly
Together the bolt hole on upper anchor slab (1) is extracted for tapping drill bit (11) and fracture crab-bolt (10)；Or card is provided with using end
The sleeve of pawl will rupture crab-bolt (10) take out；
3) insert new crab-bolt (3) at the bolt hole of upper anchor slab (1), in rotary-top crab-bolt (3) so as to bottom is screwed into lower spiral shell
Female (5), after then installing new pad and nut successively at the bottom tower above upper anchor slab (1), tensioning crab-bolt (3) is i.e.
Can.
2. removable prestressed bolt molectron according to claim 1 is it is characterised in that described sealed bottom group
For circular or polygonal shape outside part (4), inside is the helicitic texture being adapted to crab-bolt (3) bottom.
3. removable prestressed bolt molectron according to claim 1 and 2 is it is characterised in that described bottom is close
Sealing assembly (4) is made up of metal or plastics；Sealed bottom assembly (4) has the effect of sealing crab-bolt (3) bottom, can stop basis
Concrete touches crab-bolt (3) thread segment.
4. removable prestressed bolt molectron according to claim 3 is it is characterised in that described nonmetallic leveling
Nut (6) is nylon leveling nut.
5. the removable prestressed bolt molectron described in claim 1 construction installation method it is characterised in that include with
Lower step:
1) first lower anchor slab (2) is fixed on blinding layer leveling；
2) sling upper anchor slab (1), crab-bolt (3) is penetrated in plastic bushing (7), plastic bushing (7) is cased with nonmetallic leveling spiral shell
Crab-bolt (3) is then passed through the bolt hole on upper anchor slab (1) by female (6), then screws on top nut (9) at crab-bolt (3) top；
3) with the mobile upper anchor slab (1) of crane to above lower anchor slab (2), slowly hang lower upper anchor slab (1), make the corresponding insertion of crab-bolt (3)
In the bolt hole of lower anchor slab (2)；
4) rotate every crab-bolt (3) at top, crab-bolt (3) bottom is screwed in the lower nut (5) being welded on below lower anchor slab (2)
In；
5) by anchor slab (1) in the leveling of nonmetallic leveling nut (6)；6) colligation reinforcement foundation pour mixed mud, by upper anchor slab
(1), lower anchor slab (2) and crab-bolt (3) are cast in concrete foundation, after concrete reaches prescribed strength, hang on bottom column
After cylinder, in the upper tensioning crab-bolt (3) of upper anchor slab (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510515415.7A CN105155571B (en) | 2015-08-20 | 2015-08-20 | Replaceable prestressed anchor bolt assembly and mounting and replacement construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510515415.7A CN105155571B (en) | 2015-08-20 | 2015-08-20 | Replaceable prestressed anchor bolt assembly and mounting and replacement construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105155571A CN105155571A (en) | 2015-12-16 |
| CN105155571B true CN105155571B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510515415.7A Active CN105155571B (en) | 2015-08-20 | 2015-08-20 | Replaceable prestressed anchor bolt assembly and mounting and replacement construction method thereof |
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| CN (1) | CN105155571B (en) |
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| CN105421482A (en) * | 2015-12-30 | 2016-03-23 | 北京健安诚岩土工程有限公司 | Method for replacing high-strength screw for prestressed pipe pile foundation and prestressed pipe pile foundation adopting method |
| CN106351247B (en) * | 2016-10-11 | 2018-11-16 | 北京健安诚岩土工程有限公司 | The anchor cage ring formula basis of replaceable anchor bolt |
| CN106368235B (en) * | 2016-10-11 | 2018-11-16 | 北京健安诚岩土工程有限公司 | The prestressed cylinder-shaped basis of replaceable anchor bolt |
| CN107338817B (en) * | 2017-08-18 | 2022-09-13 | 陕西格瑞特电力工程有限公司 | Anchor bolt dismantling structure in prestressed anchor bolt foundation and replacement construction method |
| CN108691358B (en) * | 2018-06-26 | 2024-08-02 | 北京堡瑞思减震科技有限公司 | Combined anchor plate, buckling restrained brace connecting node and installation method thereof |
| CN110528558A (en) * | 2019-08-27 | 2019-12-03 | 西安理工大学 | Transmission line of electricity combines the design method of the lower plate of plate stem list anchor slab foundation structure |
| CN111501816B (en) * | 2020-04-08 | 2021-08-06 | 山东中车风电有限公司 | Connecting piece for anchor bolt replacement, anchor bolt system and anchor bolt replacement method |
| CN113123377A (en) * | 2021-05-12 | 2021-07-16 | 中国十五冶金建设集团有限公司 | Method for replacing anchor plate bolt of foundation of wind driven generator by excavating roadway |
| CN113186969B (en) * | 2021-06-03 | 2025-03-04 | 华电科工股份有限公司 | Prestressed anchor bolt installation structure and installation method |
| CN114411799B (en) * | 2022-01-11 | 2024-06-07 | 中广核工程有限公司 | Prestressed anchor bolt and installation method thereof |
| CN115628257A (en) * | 2022-09-21 | 2023-01-20 | 陕西海丰石油机械制造有限公司 | Anchor bolt nut cap, anchor bolt cage, anchor bolt fracture replacing tool and replacing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8051627B2 (en) * | 2006-04-30 | 2011-11-08 | General Electric Company | Tower adapter, method of producing a tower foundation and tower foundation |
| US8226354B2 (en) * | 2007-12-26 | 2012-07-24 | General Electric Company | Magnetostrictive measurement of tensile stress in foundations |
| US20110131899A1 (en) * | 2010-04-30 | 2011-06-09 | Stefan Voss | Apparatus and method for producing a concrete foundation |
| CN202934539U (en) * | 2012-11-05 | 2013-05-15 | 新疆蓝山屯河新材料有限公司 | Broken screw withdraw device |
| CN103422512B (en) * | 2013-08-29 | 2016-01-27 | 中国水电顾问集团华东勘测设计研究院 | Replaceable pre-embedded bolt formula wind generation set concrete foundation and construction method thereof |
| CN203924104U (en) * | 2014-07-02 | 2014-11-05 | 湘电风能有限公司 | A kind of blower foundation |
| CN203925895U (en) * | 2014-07-07 | 2014-11-05 | 闵怡红 | For wind power generation stepped crab-bolt Changable type basis |
| CN204510254U (en) * | 2015-03-18 | 2015-07-29 | 江苏金海新能源科技有限公司 | Anchor component and linkage thereof |
| CN205116205U (en) * | 2015-08-20 | 2016-03-30 | 江苏金海新能源科技有限公司 | Removable prestressed anchorage ties device |
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